Mod_rewrite not working

Greetings, just have that problem with PCI 3.0.1, I configured the htacces file is as follows:

#Rewrite /jicaro es el nombre de la carpeta del proyecto
RewriteEngine On
RewriteBase /jicaro
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

I do not work, and please thank your help, I looking in the manual but still can not find the solution.
First of all, Thanks!